Home / 711,375,357.41-981,676,908.57-393,849,754.84

Finding the Fourth Proportional to 711,375,357.41, 981,676,908.57 and 393,849,754.84

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Solution

The fourth proportional to 711,375,357.41, 981,676,908.57 and 393,849,754.84 is: 543,500,988.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,375,357.41 : 981,676,908.57 = 393,849,754.84 : x
  2. Step 2: Convert to fraction form
    711,375,357.41/981,676,908.57 = 393,849,754.84/x
  3. Step 3: Cross multiply
    711,375,357.41x = 981,676,908.57 × 393,849,754.84
  4. Step 4: Simplify right side
    711,375,357.41x = 386,633,209,772,383,616
  5. Step 5: Solve for x
    x = 386,633,209,772,383,616/711,375,357.41
  6. Step 6: Final answer
    x = 543,500,988.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.